KevinTheJedi
It seems that it is a bug of this version v1.15.4. There is indeed an error in the DB.
DB Error #1054
[SELECT A1.id, A1.name, A6.address FROM ost_user A1 LEFT JOIN ost_user_email A2 ON (A1.id = A2.user_id) LEFT JOIN ost_organization A3 ON (A1.org_id = A3.id) LEFT JOIN ost_user_account A4 ON (A1.id = A4.user_id) LEFT JOIN ost_user__cdata A5 ON (A1.id = A5.user_id) LEFT JOIN ost_user_email A6 ON (A1.default_email_id = A6.id) WHERE (A2.address LIKE '%yael%' OR A1.name LIKE '%yael%' OR A3.name LIKE '%yael%' OR A4.username LIKE '%yael%' OR A5.phone LIKE '%yael%') LIMIT 25] Unknown column 'A5.phone' in 'where clause
I have solved it with an answer found in this great Forum.
https://forum.osticket.com/d/99847-unknown-column-a5phone-in-where-clause
Thanks for your answer!